Russo Corporation manufactured 22,000 air conditioners during November. The overhead cost-allocation base is $33.25 per machine-hour. The following variable overhead data pertain to November: Actual Budgeted Production 22,000 units 24,000 units Machine-hours 10,875 hours 12,000 hours Variable overhead cost per machine-hour $33.00 $33.25 What is the total variable overhead variance? (Hint: to compute the machine-hours allowed per unit produced, divide the budgeted machine-hours by the budgeted production.) kr O A. $6,875.00 favorable OB. $4,156.25 unfavorable O c. $4,156.25 favorable OD. $6,875.00 unfavorable aria wa